Calibrachoa plant named ‘Sunbel 8571’

ABSTRACT

A new and distinct cultivar of  Calibrachoa  plant named ‘Sunbel 8571’, characterized by its compact and mounding plant habit; vigorous growth habit; freely branching habit; early and freely flowering habit; long flowering period; relatively large bright yellow-colored flowers; and good garden performance.

Botanical designation: Calibrachoa sp.

Cultivar denomination: ‘SUNBEL 8571’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Calibrachoa plant, botanically known as Calibrachoa sp. and hereinafter referred to by the name ‘Sunbel 8571’.

The new Calibrachoa plant is a product of a planned breeding program conducted by the Inventors in Higashiomi, Shiga, Japan. The objective of the breeding program is to develop new compact, mounding and freely branching Calibrachoa plants with numerous large and attractively colored flowers.

The new Calibrachoa plant originated from a cross-pollination conducted by the Inventors in Higashiomi, Shiga, Japan on Jul. 25, 2007 of a proprietary selection of Calibrachoa sp. identified as code number 6985-2, not patented, as the female, or seed, parent with a proprietary selection of Calibrachoa sp. identified as code number 6961-2, not patented, as the male, or pollen, parent. The new Calibrachoa plant was discovered and selected by the Inventors as a single flowering plant from within the progeny of the stated cross-pollination in a controlled greenhouse environment in Higashiomi, Shiga, Japan on Jul. 1, 2010.

Asexual reproduction of the new Calibrachoa plant by vegetative cuttings in a controlled greenhouse environment in Higashiomi, Shiga, Japan since Jul. 1, 2010 has shown that the unique features of this new Calibrachoa plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Calibrachoa have not been observed under all possible environmental conditions and cultural practices. The phenotype may vary somewhat with variations in environmental conditions such as temperature and light intensity without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Sunbel 8571’. These characteristics in combination distinguish ‘Sunbel 8571’ as a new and distinct Calibrachoa plant:

-   -   1. Compact and mounding plant habit.     -   2. Vigorous growth habit.     -   3. Freely branching habit.     -   4. Early and freely flowering habit.     -   5. Long flowering period.     -   6. Relatively large bright yellow-colored flowers.     -   7. Good garden performance.

Plants of the new Calibrachoa can be compared to plants of the female parent selection. Plants of the new Calibrachoa differ primarily from plants of the female parent selection in the following characteristics:

-   -   1. Plants of the new Calibrachoa are more compact than plants of         the female parent selection.     -   2. Plants of the new Calibrachoa are more mounding than and not         as upright as plants of the female parent selection.     -   3. Plants of the new Calibrachoa and the female parent selection         differ in flower color as plants of the female parent selection         have light orange-colored flowers.

Plants of the new Calibrachoa can be compared to plants of the male parent selection. Plants of the new Calibrachoa differ primarily from plants of the male parent selection in the following characteristics:

-   -   1. Plants of the new Calibrachoa are more compact than plants of         the male parent selection.     -   2. Plants of the new Calibrachoa are more mounding than and not         as decumbent as plants of the male parent selection.     -   3. Plants of the new Calibrachoa and the male parent selection         differ in flower color as plants of the male parent selection         have deep yellow-colored flowers.

Plants of the new Calibrachoa can also be compared to plants of Calibrachoa ‘Sunbelriki’, disclosed in U.S. Plant Pat. No. 20,918. In side-by-side comparisons conducted in Higashiomi, Shiga, Japan, plants of the new Calibrachoa and ‘Sunbelriki’ differed primarily in the following characteristics:

-   -   1. Plants of the new Calibrachoa were more compact than plants         of ‘Sunbelriki’.     -   2. Plants of the new Calibrachoa were more mounding than and not         as outwardly spreading as plants of ‘Sunbelriki’.     -   3. Plants of the new Calibrachoa had shorter internodes than         plants of ‘Sunbelriki’.     -   4. Plants of the new Calibrachoa had slightly smaller leaves         than plants of ‘Sunbelriki’.     -   5. Plants of the new Calibrachoa were more freely flowering than         plants of ‘Sunbelriki’.     -   6. Plants of the new Calibrachoa ‘Sunbelriki’ differed slightly         in flower color.     -   7. Plants of the new Calibrachoa had shorter peduncles than         plants of ‘Sunbelriki’.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new Calibrachoa plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Calibrachoa plant.

The photograph at the top of the sheet comprises a side perspective view of a typical flowering plant of ‘Sunbel 8571’ grown in a container.

The photograph at the bottom of the sheet is a close-up view of a typical flowering plant of ‘Sunbel 8571’.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photographs and following observations, measurements and values describe plants grown during the summer in 15-cm containers in an outdoor nursery in Higashiomi, Shiga, Japan and under cultural practices typical of commercial Calibrachoa production. During the production of the plants, day temperatures averaged 23° C. and night temperatures averaged 13° C. Plants were four months old when the photographs and the description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2007 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Calibrachoa sp. ‘Sunbel 8571’. -   Parentage:     -   -   Female, or seed, parent.—Proprietary selection of             Calibrachoa sp. identified as code number 6985-2, not             patented.         -   Male, or pollen, parent.—Proprietary selection of             Calibrachoa sp. identified as code number 6961-2, not             patented. -   Propagation:     -   -   Type.—By vegetative cuttings.         -   Time to initiate roots, summer.—About one week at 15° C. to             20° C.         -   Time to produce a rooted young plant, summer.—About three             weeks at 15° C. to 20° C.         -   Root description.—Fibrous; white in color.         -   Rooting habit.—Freely branching; medium density. -   Plant description:     -   -   Plant and growth habit.—Compact and mounding plant habit;             freely branching habit with numerous lateral branches             developing per plant; pinching enhances lateral branch             development; vigorous growth habit.         -   Plant height.—About 15 cm.         -   Plant diameter.—About 35.8 cm. -   Lateral branch description:     -   -   Length.—About 15.7 cm.         -   Diameter.—About 1.8 mm.         -   Internode length.—About 1.6 cm.         -   Strength.—Strong.         -   Aspect.—Upright to outwardly.         -   Texture.—Pubescent.         -   Color.—Close to 144A. -   Foliage description:     -   -   Arrangement.—Alternate, simple.         -   Length.—About 3.75 cm.         -   Width.—About 1.1 cm.         -   Shape.—Spatulate.         -   Apex.—Obtuse.         -   Base.—Cuneate.         -   Margin.—Entire.         -   Texture, upper and lower surfaces.—Pubescent.         -   Venation pattern.—Pinnate; reticulate.         -   Color.—Developing leaves, upper surface: Close to 143A.             Developing leaves, lower surface: Close to 137D. Fully             expanded leaves, upper surface: Close to 143A; venation,             close to 144B. Fully expanded leaves, lower surface: Close             to 143C; venation, close to 144D.         -   Petiole.—Length: About 3 mm. Diameter: About 1 mm. Texture,             upper and lower surfaces: Pubescent. Color, upper and lower             surfaces: Close to 144B. -   Flower description:     -   -   Flower arrangement and habit.—Single salverform flowers             arising from upper leaf axils; freely flowering habit with             usually about 155 flowers developing per plant; flowers face             upright or outwardly.         -   Fragrance.—None detected.         -   Natural flowering season.—Early flowering habit, plants of             the new Calibrachoa initiate and develop flowers about three             to four weeks after planting; long flowering period,             flowering naturally commences during the early spring and             plants flower continuously throughout the summer until late             autumn in Japan.         -   Flower longevity.—Individual flowers last about seven to ten             days on the plant; flowers not persistent.         -   Flower diameter.—About 2.8 cm.         -   Flower length (depth).—About 2.3 cm.         -   Throat diameter.—About 6.3 mm.         -   Tube length.—About 1.6 cm.         -   Tube diameter, base.—About 2.9 mm.         -   Flower buds.—Shape: Cylindrical. Length: About 2.1 cm.             Diameter: About 5.9 mm. Color: Close to 3C.         -   Corolla.—Arrangement: Five petals fused at the base and             opening into a flared trumpet. Petal length from throat:             About 1 cm. Petal width: About 1.2 cm. Petal shape: Roughly             spatulate. Petal apex: Rounded with truncate tendencies.             Petal margin: Entire. Petal texture, upper and lower             surfaces: Smooth, glabrous. Throat texture: Smooth,             glabrous. Tube texture: Pubescent. Color: Petal, when             opening, upper surface: Close to 12A. Petal, when opening,             lower surface: Close to 12C. Petal, fully opened, upper             surface: Close to 9A; venation, close to 12A. Petal, fully             opened, lower surface: Close to 9A; venation, close to 9A.             Throat: Close to 11A; venation, close to 11A. Tube: Close to             11B; venation, close to 11B.         -   Calyx.—Arrangement: One star-shaped tubular calyx tube with             five sepals fused at the base. Sepal length: About 5 mm to             8 mm. Sepal width: About 1.7 mm. Sepal shape: Lanceolate.             Sepal apex: Obtuse. Sepal margin: Entire. Sepal texture,             upper and lower surfaces: Pubescent. Sepal color: Immature             and mature, upper surface: Close to 143A. Immature and             mature, lower surface: Close to 143B. Peduncles: Length:             About 1.2 cm. Diameter: About 0.7 mm. Angle: Mostly             outwardly. Strength: Strong. Texture: Pubescent. Color:             Close to 144B.         -   Reproductive organs.—Stamens: Quantity: Five per flower.             Stamen length: About 1 cm to 1.2 cm. Anther shape:             Ellipsoidal. Anther size: About 1 mm by 1.2 mm. Anther             color: Close to 13A. Pollen amount: Scarce. Pollen color:             Close to 2D. Pistils: Quantity: One per flower. Pistil             length: About 1.1 cm. Style color: Close to 145C. Stigma             shape: Transversely ellipsoidal. Stigma color: Close to             145A. Ovary color: Close to 144B.         -   Seeds and fruits.—Seed and fruit development have not been             observed on plants of the new Calibrachoa. -   Garden performance: Plants of the new Calibrachoa have been observed     to have good garden performance and to tolerate wind, rain and     temperatures ranging from about 5° C. to about 35° C. -   Pathogen & pest resistance: Plants of the new Calibrachoa have not     been observed to be resistant to pests and pathogens common to     Calibrachoa plants. 

It is claimed:
 1. A new and distinct Calibrachoa plant named ‘Sunbel 8571’ as illustrated and described. 